Air leak from the exhaust manifold

Tiny
UNCLE CHICO
  • MEMBER
  • 1989 TOYOTA 4RUNNER
  • 3.0L
  • 6 CYL
  • 4WD
  • MANUAL
  • 180,000 MILES
I have an air leak from the exhaust manifold and what is the bolt pattern for the manifold?
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Saturday, April 23rd, 2022 AT 1:03 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

I'm not 100% sure what is needed, but I will try to explain how the system is put together.

There are two exhaust manifolds, one on each side of the engine. The two are joined together via a crossover pipe that runs behind the engine.

I'm not sure where you hear the leak, but it could be between the two manifolds where the crossover pipe is located.

Pics 1 and 2 are the manifolds. Pic 1 is the driver's side and pic 2 is the passenger side. The third pic is an exploded view, and I highlighted the cross-over pipe. Note that the driver's side has two outlets. One is for the cross over and the other attaches to a downpipe for the exhaust.

You can see the bolt patterns in the pics.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.
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Saturday, April 23rd, 2022 AT 9:35 PM

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